Following similar moves by Britain and the U.S., Canada is imposing new sanctions on Iranians suspected of involvement in a plot to kill the Saudi ambassador in the United States.

"Today Canada is imposing sanctions on five additional Iranian nationals," Foreign Affairs Minister John Baird announced in the House of Commons Tuesday.

The new measures place travel restrictions on the individuals and ban financial dealings with them.

"These sanctions are on top of others already in place against Iran," said Baird. "As the prime minister said last week, this regime in Tehran represents probably the most significant threat to the world, to global peace and security, and I completely agree."

U.S. officials have said they believe it likely that the head of Iran’s elite Quds force knew of the alleged plot to kill Saudi ambassador Adel al-Jubeir.

The five people targeted include Manssor Arbabsiar, an American citizen arrested in September in connection with the terror plot.

The other four Iranian nationals are believed to be members of the Islamic Revolutionary Guard Corps, which Washington says supports terrorism around the world.